Driving-gear.



(No Model.)

mini-.1.

WITNESSES:

W @(Qa' DRIVING GEAR.

(Application filed Oct. 1, 1901.)'

Patented Sept. 9, I902.

3 Sheets-Sheet I.

I I I a .& .-J

SILT III;

THE NORRIS PEYERS cu, PHQTQLITMQ. WASHINGTON. 0.1:.

INVENTOH $4M YM ATTOR N EYS No. 708,579. Patnted Sept. 9, I902.

J. NUTRY.

DRIVING GEAR.

(Application filed Oct. 1, 1901;) (No Model.) 3 Sheets-Sheet 2.

ATTORNEYS THE uoms PETERS cu, wow-urns" WASNINGTON. a. c

No. 708,579. Patented Sent. 9. I902. J. NUTBY.

DRIVING GEAR.

(Application mm on. 1, 1901.]

(No Model.) 3 Shaejs-Sheet 3.

Wig. 5.

ATTOBN EYS THE NORRIS PETERS co. Pnoruumu, \wxsmucrou, u. c.

' NrrE STATES ATENT FFICE.

JOHN NUTRY, OF MIDLANDPARK, NEW JERSEY, ASSIGNOR OF TWO-THIRDS TO CARLP. LENK AND RUDOLPH LENK, OF NEW YORK, N. Y.

DRIVING-G EAR.

SPECIFICATION forming part of Letters Patent No. 708,579, datedSeptember 9, 1902.

Application filed October 1, 1901.

T 66, whom it may concern:

Beitknown that I, JOHNNUTRY, acitizen of the United States, residing inMidlandpark, Bergen county, State of New Jersey, have invented certainnew and useful Improvements in Driving-Gear, of which the following is aspecification.

My invention relates to driving-gears, and has for its object to providemeans for converting reciprocating into rotary motion in such a mannerthat While the driving part reciprocates continuously without a changeof speed the rate of speed of the driven rotarypart may be varied duringits movement and that, if desired, the rotary part may be stoppedaltogether,whilothe driving part continues to reciprocate. Such a deviceis of particular use in its application to automobiles, since in theseit is often desirable to have the motor run continuously even whilethecarriageisstopping. Myinvention therefore provides a convenient meansnot only of starting and stopping the automobile, but of changing thespeed thereof Within certain limits, and the change of speed is gradual.A further advantage is that the stopping of the driven part is precededby a gradual decrease of the speed, thus avoiding injury to themechanism, such as might result from a too sudden stoppage. Of coursethe mechanism is applicable to other constructions also, as to marineengines.

Reference is to be had to the accompanying drawings, which show oneembodiment of my invention, and in which Figure 1 is a plan of part ofthe mechanism, showing principally the driven shaft and its directconnections. Fig. 2 is a crosssection on the line 2 2 of Fig. 1. Fig. 3is a sectional elevation on the line 3 3 of Fig. 2. Fig. 4 is anelevation on the line 4 4 of Fig. 3. Fig. 5 is a face view, and'Fig. 7 aside view, of a member of the intermittent grip mechanism employed inthe construction shown. Figs. 6 and 8 are respectively a face view and aside View of the other member of the intermittent grip device, and Figs.9 and 10 are side elevations showing the entire mechanism in twodifferent positions.

A is a reciprocating r0df0r instance, the

Serial No. 77,197. (No model-l piston-rod of a steam-engine orhydrocarbonengine. This rod is guided in any suitable way, as by meansof a cross-head B and slideways 0.

To one end of the reciprocating red. A are pivotally joinedconnecting-rods D, each of which drives an intermittent grip device.While I do not wish to limit myself to any particular construction ofthe intermittent grip device, I have illustrated what. I consider to bea very satisfactory form of such device. This device consists of adriving member E in the shape of a ring, from which extends an arm E,ha"ving a radial slot E At the outer end of said slot is an enlargementE for a purpose to be stated hereinafter. Into the slot E extends a pinD at the end of the connecting-rod D, and with this pin is alsoconnected a link F, supported at its other end upon a carrier G by meansof a pivot G. This carrier and the pivot G are normally stationary, sothat the pivotjoint D will swing in the arc of a circle the center ofwhich is at G. Consequently when the rod A is reciprocated the ring Ewill be given an oscillating motion. This ring surrounds a clutch memberH, which is rigidly seoured to the driven shaft I and is recessed toreceive rollers K in such manner that the radial arms between therecesses engage the ring E. These rollers are adapted to drive the shaftby engaging shoulders H on the clutch member H; but until the rollersengage the said shoulders no driving action occurs. The space betweenthe inner surface of the ring E and the inner Wall of the recess of theclutch member H is such as to allow the rollers K to travelcircumferentially a small distance Without exerting any driving action,while avoiding superfluous play. If only the ring E and the said clutchmember were provided in connection with the rollers K, the clutch memberwould be driven in both directions. As it is desired, however, to givethe shaft rotation in the 5 same direction, I provide means forpreventing the rollers K from operatively engaging one of the shouldersH. This means consists of a disk J, having pins J, which project intothe recesses of the clutch member If I00 and are adapted to take aposition such as indicated at a in Fig. 4, which keeps the rollers Kaway from one of the shoulders H of each recess. Thus in the positionshown in Fig. 4 the shaft I will be driven only in the directionindicated by the arrow, and when the ring E turns in the oppositedirection it will simply slip overthe rollers K without driving theshaft. To one end of the clutch member H, I secure a face-plate H whichserves partly as a guide for the ring E and, further, as a means forpreventing an endwise movement of the rollers K. If the disk J and pinsJ always occupied the same position relatively to the clutch member H,the shaft I would always be driven in the same direction. As, however,it is often desirable to reverse the shaft, I provide the followingarrangement: The disk J has a sleeve extension J which extends over asleeve extension H of the clutch member H. This sleeve member J isprovided with an oblique slot I J and the sleeve member H has alongitu-' dinal slot H In both of these slot-s extends a pin or screw L,which is secured to a shifting sleeve L, surrounding the sleeve portionJ A collar M, rigidly secured to the shaft I, as by a set-screw M,prevents endwise movement of the sleeve J It will. be obvious that whenthe shifting sleeve L is moved toward the right from the position shownin Fig. 3 the sleeve itself will move lengthwise only, since it engages,through the medium of its screw L, the longitudinal groove H of thesleeve H which latter is rigid with the shaft I. The pin or screw L,moving lengthwise, will by its engagement with the walls of the obliqueslot J turn the disk J relatively to the shaft I and will thus bring thepins J to the other side of the recess in the clutch member H. As aresult of this changed position the rollers K will become operative todrive the clutch member H and the shaft I in the opposite direction.Preferably the clutch member H has enlargements H at the peripheralportions of its recesses to receive the pins J, so that they will not bein the way of the rollers K when the latter engage the shoulders H.

If only one driving-ring E were provided, the shaft I would be rotatedin either direction, as desired, but the rotation would be anintermittent one. To secure a continuous rotation, I provide a duplicatearrangement of parts, as shown, and it will be obvious from Fig. 10 thatas the rod A moves forward one of the rings E will turn in a clockwisedirection and the other ring E contra-clockwise. It follows that theclutches of the two halves of the mechanism should be so constructedthat their driving periods will alternate-that is, one driving-ringshould be operative during the outward stroke of the rod A and the otherdriving-ring should be operative during the inward stroke of the rod A.WVhen 63 the shaft is to be reversed, the two shifting sleeves L shouldof course be moved in unison. This may be accomplished, as indidicatedin Figs. 1 and 2, by means of a shifting-lever N, fulcrumed at N toswing lengthwise of the shaft I and having two forked members, each ofwhich is again forked, as at N N, and provided with suitable engagingdevices which enter the customary groove of the shifting sleeve L.

So far as described the mechanism converts reciprocating motion intorotary motion and also allows the direction of the rotary motion to bereversed without interrupting the reciprocating motion. It is furtherdesirable, as pointed out at the beginning of this specification, thatprovision should be made for changing the speed while the mechanism isin motion and for even stopping the shaft I altogether while the motorwhich drives the reciprocating rod A continues running. For this'purposeI provide the mechanism shown fully in Figs. 9 and 10. 'According tothis construction the carriers G, which have the fulcrums G for thelinks F, are adjustable, so that the pivot joints D may be broughtnearer to or farther from the shaft I. It will of course be obvious thatthe nearer the said pivot-joints are to the shaft the greater will bethe angular movement of the driving-rings E, and consequently thegreater the speed of the shaft I. Fig. 10 shows a position in which afairly high .rate of speed is obtained, it being understood that thegreatest speed corresponds to the innermost position of the pivot-jointsD. The length of the slot E is so proportioned to the length of theconnecting-rods D that when the pivot-joints D are moved to the outerends of said slots the two connecting-rods will extend substantially inalinement with one another during a portion of the stroke of the rod A,as shown in Fig. 9. It will be obvious that the reciprocating movementof the rod A would impart but a very slight oscillating motion to therings E in this position. To enable the shaft I to stop altogether whenthe parts are in the position illustrated by Fig. 9, I provide theenlargements E at the outer ends of the slots E these enlargements beingof sufficient width to allow the pins D to swing slightly withoutoperating the driving-rings E. Thus it will be understood that in theposition illustrated by Fig. 9 the connecting-rods D and links F moveslightly; but the driving-rings E remain stationary. As a means foradjusting the carriers G, I may provide a speed-changing lever O,fulcrumed at O and connected by links P with pins P,sliding inlongitudinal slots Q of a suitable stationary part Q. The pins P alsoengage longitudinal slots G in the carriers G, which latter are pivotedto the stationary part Q at G It will be obvious that simply throwingthe lever O to one side or the other will change the position of thecarriers, and consequently alter the speed of the driven shaft I, as hasbeen explained above. It will also be obvious that this movement of thecarriers G may be effected while the mechanism is in motion, and thus myinvention possesses an advantage which is very valuable, especially inthe case of automobiles and marine engines.

It will be seen that my invention provides means for driving a rotaryshaft at any desired rate of speed, according to the requirements of theload or according to the strain upon the driven part, and thus aconsiderable saving of power may be effected, owing to the readyadaptation of the speed and power to the varying conditions, as when anautomobile is traveling along hilly roads. The advantage of beingabletostop the driven shaft while the motor continues running will be obvious,especially with reference to the employmentofexplosive-engines Similarlythe advantage of being able to control the speed gradually while theengine is in motion and of reversing the driven part will be evident,especially when it is considered that the stoppage of the driven part iscompulsorily preceded ,by a gradual slackening of speed. While I haveshown a double intermittent grip mechanism the sections of which workalternately, in some cases it might be sufficient to provide only onesuch mechanism, in which event the inertia of the parts connected withthe driven shaft, as fly-wheels, will be relied upon to continue therotation of the shaft between successive impulses. It is of coursepreferable, however, to provide a double arrangement by which apractically continuous driving action is assured.

it \Vhile the driven part-that is, the shaft Iis preferably stoppedgradually by the use of the speed-controlling lever O, as described, Imay in an emergency disconnect the shaft suddenly from the motor byshifting the reversing-lever N to an intermediate position, in which thepins J will hold the rollers K from clamping contact with either of theinclines H of the clutch member H.

I desire it to be understood that where in the claims I speak of areciprocating driving member (the rod A in the specific constrnctionshown) I do not wish to be understood as limiting myself to a partreciprocating in a straight line, but I desire to include under thisterm any part which will have the function describedthat is, a partwhich will move alternately toward and from the driven part.

Having fully described my invention, I claim and desire to secure byLetters Patent- 1. The combination of a reciprocating driving member, adriven part mounted to turn, a driving part mounted to oscillate aboutthe axis of the driven part and provided with an outwardly-extendingguideway, an intermittent grip device forming a driving connection withsaid connecting mechanism'at the adjustable member thereof, and anadjustable carrier on which said link is fulcrumed.

2. 'lhe'combination of a reciprocating driving member, a driven partmounted to turn, a driving part mounted to oscillate about the axis ofthe driven part, and provided with an outWardly-extendiug guideway, anintermittent grip device forming a driving connection between saidoscillating driving part and the driven part, connecting mechanismcomprising an adjustable member arranged to slide along the guide'way ofthe driving part, a link pivotally connected with said connectingmechanism at the adjustable member thereof, a normally stationarycarrier on which said link is fulcrumed, said carrier being pivoted to astationary part, and a speed-controlling lever for adjusting the carrieron the pivot.

3. The combination of a reciprocating driving member, a driven partmounted to turn, a connecting mechanism from the driving member to thesaid part, the latter being provided with a guideway on which saidconnecting mechanism is adjustable, the said guideway being arrangedsubstantially radially with respect to the axis of the driven part, andhaving at its outer portion a lateral extension on which said connectingmechanism may move when in its outer position, said mechanism beingadjustable on the driven part from its outer position at which thedriving member moves without affecting the driven part, to a maximum ofrotary speed of the driven part, and means for adjusting said connectingmechanism.

4. The combination of a reciprocating driving member, a driven partmounted to turn, a driving part mounted to oscillate about the axis ofthe driven part and provided with an outwardly-extending guidewayterminating in a lateral extension, an intermittent grip device forminga driving connection between said oscillating driving part and thedriven part, connecting mechanism from the reciprocating driving memberto the oscillating driving part, said connecting mechanism comprising anadjustable member arranged to slide along the guideway of theoscillating driving part and the lateral extension thereof and toreciprocate longitudinally along said lateral extension, a linkpivotally connected with said connecting mechanism at the adjustablemember thereof, a normally stationary carrier on which said link isfulcrumed, 'said carrier being pivoted to a stationary part, and aspeed-controlling lever for adjusting the carrier on the pivot, andadapted to move the adjustable member of the connecting mechanism alongthe guideway of the driving part and into engagement with the in alateral extension, extending at an angle to the main portion of saidguideway an intermittent grip device forming a driving connectionbetween said oscillating part and the driven part, connecting mechanismfrom the reciprocating driving member to the oscillating driving part,said connecting mechanism comprising an adjustable mcmberarranged toslide along the guideway of the oscillating driving part and the lateralextension thereof and to reciprocate longitudinally along said lateralextension, and an adjustable support for said adjustable member.

6. An intermittent grip device com prising a driving-ring, a clutchmember, having a hub projected therefrom, a plurality of rollers betweenthe driving-ring and the cl ntch member, pins projecting on each side ofsaid rollers so as to limit the motion of said rollers, a plate-diskfrom which said pins project, a sleeve upon which said disk is mountedand'capable of a partial movement of rotation about the axis of saidgrip device, but incapable of longitudinal movement along the same, saidsleeve being provided with an oblique slot, a pin adapted to movelongitudinally in a groove in the hub of said clutch member and toengage the walls of said ohlique slot in said sleeve, and means to movesaid pin longitudinally along said. hub and thereby to rotate saidsleeve and the disk thereon and to vary the position of the pins withinsaid recesses and the movement of the said rollers.

'7. An intermittent grip device comprising a driving-ring, a clutchmember provided with a plurality of arms which contact with thedriving-ring and between which are recesses, the inner walls of whichconsist of inclined planes, a plurality of rollers Within said recessesand adapted to engage the inner surface of the driving-ring, and meansfor preventing the engagement of the rollers with the driving-ringduring movement of the lat-- ter in one direction.

JOllN NUTRY. \Vitnesses:

CARL P. LENK, JOHN L'oTKA.

